Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Income Tax Contingency [Line Items]
Income tax provision (benefit)	$ 21	$ 52
Effective tax rate	(233.00%)	23.00%
Unrecognized tax benefits	$ 490
Unrecognized tax benefits that would impact effective tax rate	128
Net accrued interest	20
Interest and penalties accrued	2
Foreign Tax Authority | Secretariat of the Federal Revenue Bureau of Brazil
Income Tax Contingency [Line Items]
Income tax provision (benefit)		$ 3
Gain on indirect tax recoveries	$ 3	$ 8